Stove.



PATENTED MAR. 24, 1908.

s. BOAL.

STOVE. APPLICATION FILED APR. 12,1906.

2 SHEETS-SHEET 1.

z o M e u n a Wt lineoaeo rm: Ncmms PETER: cu.. wnsnmcmlv, 04 c.

PATENTBD MAR. 24,1908. s. BOAL.

STOVE. APPLICATION IILED APR. 13,1906.

2 SHEETS-SHEET 2.

an uenl'o:

wifneoazo STANHOPE BOAL, OF PIQUA, OHIO.

STOVE.

Specification of Letters Patent.

Patented March 24, 1908.

Application filed April 12, 1906. Serial No. 311,368.

To all whom it may concern:

Be it known that I, STANHOPE BOAL, a citizen of the United States, residing at Piqua, in the county of Miami and State of Ohio, have invented certain new and useful Improvements in Stoves, of which the following is a specification.

My invention relates to an improvement in the construction of heating stoves and particularly stoves of this character which are designed to burn soft coal.

My invention as shown is applied to a cannon stove having the ordinary grate bars upon which the fuel rests, (not shown in the drawings).

The object of the invention is to provide means for obtaining a thorough combustion of the gases generated in the burning of bituminous coal, at the same time providing a large voluminous door having mica plates and so constructed as to prevent the gases from striking the mica plates and admitting a large amount of air through perforated plates inside of the mica to aid combustion.

The features of the invention are more fully set forth in the description of the accompanying drawings, forming a part of this specification, in which Figure 1 is a central vertical section of a stove, combustion chamber and fire-box. Fig. 2 is an inside plan view of the stove door, illustrating but one of the perforated sheet metal plates in position. Fig. 3 is an enlarged section on line a, :c, Fig. 4. Fig. 4 is an enlarged plan view of the intermediate or main door frame section. Fig. 5 is an enlarged plan view of the outer door frame section. Fig. 6 is an enlarged longitudinal section through the door.

1 represents the stove casing, the interior of which forms the combustion chamber or fire box.

2 represents the draft-pipe.

3 represents the doors.

Each door frame consists of three sections, an intermediate or main door section 4, an outer door section 5, and an inside door section 6, see Fig. 4. Each of these sections is provided with the openings 7 which register when the three sections are placed together. These window openings are formed by the marginal ieces 8 and the cross pieces 9. The outsi e face of these pieces 8 and 9 of the main section 4 is provided with the channels 10, and the series of lugs 11, see Fig. 6. The

meeting or inner face of the section 5 has similar pieces 8, 9, and similar channels 12, but within these channels 12 of the section 5 are the lugs 13, which lie within the channels 10 formed between the lugs 11 of section 4, so as to seat this outer section 5 upon the intermediate section 4. The section 5 is not quite coextensive with the section 4 and the outer edges of the marginal pieces of these sections do not .meet so that a marginal air space is formed between them around the door, as indicated in F 5, which serves to admit air into the channels formed between the meeting surfaces of the cross pieces 9. The mica panels 14 are clamped between these sections 4 and 5, being held in close contact with the ribs 21 of the section 5, by the lugs 11. It will be seen that air is thus admitted around the door and into the channels between the cross pieces, passing between lugs 11 into the space in rear of the mica. The inner door section 6 is inlike manner seated against the inner face of the section 4 and the 'foraminous perforated sheet metal windows 15 are clamped between these sections 4. and 6 in rear of the mica, so that the air which is admitted in rear of the mica will be supplied through these perforations around the fuel bed, and the perforated metal will protect the mica from the smoke and carbon of the fire box, without in any way interfering with the display through the windows.

The sections are provided with the bolt holes and are clamped together by the bolts 23 passing through the same.

Having described my invention, 1 claim 1n a stove, a feed door comprising three skeleton sections, an intermediate section, an outer and an inner section, said intermediate section provided with a series of lugs projecting from the front face thereof, mica secured against the lugs by the outer frame section, forming air passages between the intermedi ate section and mica, foraminous metal plates secured to the rear face of the intermediate section by said inner section, whereby air is supplied through the door to the combustion chamber of the stove, substantially as described.

In testimony whereof, I have hereunto set my hand. S'FA NHOPFJ BOAL.

Witnesses:

O. WINKEL NN, OLIVER B. KAisER. 

